919004-99-2 3,5,7,9-Tetraoxadecanoic acid, 2,2,4,4,6,6,8,8,10,10,10-undecafluoro-,ammonium salt (1:1) 919005-17-7 4,7,9,11,13-Pentaoxatetradecanoic acid,2,2,3,5,5,6,6,8,8,10,10,12,12,14,14,14-hexadecafluoro- 919005-30-4 5,8,10,12,14-Pentaoxapentadecanoic acid,2,2,3,4,4,6,6,7,7,9,9,11,11,13,13,15,15,15-octadecafluoro- 919005-43-9 Propanoic acid,3-[1,1,2,2-tetrafluoro-2-(1,1,2,2,3,3,3-heptafluoropropoxy)ethoxy]- 919005-53-1 Hexanoic acid,2,2,3,3,4,4,5,5,6,6-decafluoro-6-(1,2,2,2-tetrafluoroethoxy)-